Cov hlau alkali reactive heev thiab yog li feem ntau pom muaj nyob rau hauv cov tebchaw nrog lwm cov ntsiab lus, xws li ntsev (sodium chloride, NaCl) thiab potassium chloride (KCl).
Vim li cas cov hlau alkali thiaj li muaj zog?
Txhua cov alkali hlau-lithium, sodium, potassium, thiab lwm yam-muaj tsuas yog ib qho hluav taws xob hauv lawv lub plhaub valence. Vim tias qhov no ib qho hluav taws xob zoo li yuav nyob deb ntawm lub nucleus, nws xav tias me ntsis ntxim nyiam rau lub atom. Qhov tshwm sim: Alkali hlau nyiam plam cov hluav taws xob no thaum lawv koom nrog kev cuam tshuam.
Puas yog alkali hlau reactive lossis unreactive thiab vim li cas?
Cov hlau alkali, pom nyob rau hauv pawg 1 ntawm lub sij hawm lub sij hawm, yog cov hlau uas muaj zog heevuas tsis tshwm sim hauv qhov xwm txheej. Cov hlau no tsuas muaj ib qho hluav taws xob hauv lawv lub plhaub sab nrauv xwb. Yog li ntawd, lawv tau npaj kom poob ib qho hluav taws xob hauv ionic bonding nrog lwm cov khoom.
Puas alkali hlau mos thiab reactive?
Pab pawg 1A (lossis IA) ntawm lub sijhawm lub sijhawm yog cov hlau alkali: hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), thiab francium (Fr). Cov no yog(tshwj tsis yog hydrogen) mos, ci ntsa iab, qis melting, cov hlau reactive heev, uas tarnish thaum raug huab cua.
Yuav ua li cas alkali hlau yog feem ntau reactive nrog dej?
Sodium yog cov khoom alkali uas cuam tshuam nrog dej ntau tshaj.
